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What std::mem::forget Actually Does to Heap Allocations

Rust guarantees memory safety, not resource freedom. Calling std::mem::forget suppresses destructor execution entirely, tearing down the stack pointer while leaving heap metadata active in allocator…

  • std::mem::forget disables destructor execution, freeing stack pointer.
  • Keeps heap metadata active in allocator slabs, evading Undefined Behavior.
  • Differentiates from Box::intoraw and ManuallyDrop for resource management.

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